In a population, a certain number of cases of a disease is expected to
be seen. For instance, statistics show that one in every three persons
will develop some type of cancer during a lifetime. The number of
cases of a disease that would be expected in a population that is being
investigated is based on the number of cases seen in the comparison population. Generally, the results of the evaluation will
be one of three findings.

Click on the boxes that follow or on the View
All link below to see these possible findings.